Upland Hills WRP - Secondary Wastewater Treatment in Upland, California

Upland Hills WRP (Water Reclamation Plant) is a municipal wastewater treatment facility located in Upland, San Bernardino County, California. The plant serves a small population of approximately 1,200 residents and is part of the region's water infrastructure. It is situated inland, away from the coast, and operates within the regulatory framework of the United States. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater. With a designed capacity of 757.08 megaliters per year and an annual discharge volume of 567.81 megaliters, the facility operates below its capacity. As a small-scale plant, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the California State Water Resources Control Board, ensuring compliance with water quality standards. The treated effluent is discharged into local waterways that eventually drain into the Pacific Ocean via the Santa Ana River watershed. The plant plays a role in protecting downstream ecosystems, including the Santa Ana River and its associated habitats, which support diverse aquatic life and are important for regional water resources.

The plant discharges into the Santa Ana River watershed, which flows through Southern California to the Pacific Ocean. This watershed supports critical habitats for native fish species and migratory birds. The region's semi-arid climate makes water reclamation and quality management essential for maintaining ecological balance and meeting downstream water demands.